Okay so this is the deal- my pedalboard has a dirt chain that goes Mastotron -> Box Of Metal -> Distortron (with various stuff before/after it) So far, every sound that I get out of the Mastotron, I've been able to get out of the Box Of Metal as well, whether it be on guitar or bass. Admittedly it's not exactly the same, but close enough. The only thing that I've found that the Mastotron alone does that the Box Of Metal can't is a very heavily gated chainsaw-y fuzz, which I don't like/don't use anyway and I can get that by chaining my Box Of Metal with other gain stages. Am I using my Mastotron wrongly? I don't want to sell it and later regret selling it, but so far I haven't found any reason to use it- whatever I've been using it for, the Box Of Metal can do too, and has a noise gate to control feedback. What do you guys use the Mastotron for? Anything I should try with it? Edit- For reference, my effects chain is: Instrument -> Foxrox Octron -> Boss PS-5 -> Mastotron -> Box Of Metal -> Distortron -> Bass Crybaby -> Visualsound H2O chorus/delay -> DoD Ice Box chorus -> Electronix Submarine preamp -> Proel volume pedal -> Amp I use it for bass, electric guitar and electric violin. Is there anything in there that the Mastotron can mix well with? I don't think it really affects, but just throwing this out on a limb.